Chain pipe-vise or the like.



G. AMBORN. V CHAIN PIPE VISE OR THE LIKE.

APPLICIATION FILED DEC. 27, 1911.

Patented Mar. 4, 1913.

i j u I WITNESSES:

moving ITED sTATns GEORGE AMBORN, OF CHAPINVILLE, CONNECTICUT, ASSIGNOR T0 J. H. WILLIAMS &

CO., OF BROOKLYN, N EW'. YORK,

A CORPORATION OF NEW YORK.

CHAIN PIPE-VISE OR THE LIKE.

' Specification of Letters Patent.

Patented Mar. 4, 1913.

To all whom it may concern Be it known that I, Gnonen AMBonN, a citizen of the United States, residing in Chapinville, in the county of Litchfield and State of Conneeticut,'have invented certain new and useful Improvements in Chain Pipe-Vises or the Like, of which the following is a specification.

This invention relates to chain pipe vises or the like, and aims to provide certain improvements therein.

In the ordinary form of vise two jaws are usuall provided on which the pipe is design to rest, the latter being clamped in position by a chain which passes around the pipe between the jaws. A look is usually provided for one end of the chain, while the other is customarily connected with a bolt passing through the bed of the vise and rovided with a nut by which the bolt may e drawn downwardly, chain.

One of the objects of the present invention is to provide a construction in which the nut or equivalent take-up device is displaced from the under side of the bed-plate to a pointwhere it is more readily accessible.

To this end I rovide a vise in which at least one end of t e chain is connected with a lever, preferably pi voted between the jaws, and I provide a take-up mechanism for the lever to tighten the chain, which mechanism has its hand-operated art located at what may be termed the rout of the vise, or that side of the latter which is mostaccessible in use. Preferably the takeup mechanism is inclined upwardly to near the vertical, and the handle is located at its upper end. i

The invention also rovides an improved construct-ion in thatt clock for the chain is elevated above the bed plate of the vise where it is more accessible for adjustments, and preferably also I provide an adjustable lock which in the preferred construction is movable to tighten the chain. In the preferred construction the lock is formed on or carried by a lever which is pivoted between the jaws and the take-up mechanism operates against the opposite end of the lever.

Certain other improvements are also 1'0 vided which will be hereinafter referre to.

Referring to the drawings which illustratethus tightening the' .one form of the invention,-Figure 1 is a side elevation. Fig. 2 is a front"elevation'.

Referring to the drawingalet A indicate the bed plate of the vise and B 13- its jaws. These jaws maybe fixed to thebed plate in any suitable manner and are provided with suitable working faces C designed to support the ,pipe. A chainD is provided as is customary for clamping the pipe against the aws.

According to one feature of the present invention the front end of the chain instead of being connected with the take-up mechanism for tightening the chain is fixedly secured to the vise, preferably by means of links T which are pivoted to lugs formed on the body of the vise and preferably on the bed plate A. By this construction the adjustment of the ferred form the rear end ofthe chain is adapted to engage a lock or looks, which instead of being fixed on the bed plate, as is now customary, are carried by or formed as a part of a horizontally arranged lever R which is shown as located between the jaws and pivoted at S to the latter. Preferably the take-up mechanism which is operated by hand is located at the front of the vise, and is so arrranged that the operating handle L is located at a point above the-bed plate, so that it is easily accessible in use. 1 In the construction shown the handle L is pivotally connected with an adjusting screw U' which engages a threaded nut V carried by or formed integrally with the ,lever R, the lower end of the screw bearin againstv a fixed abutment'W which is pre erably promodate the slight tilting movements of the screw which occur when the viseis operated. The screw U is inclined upwardly away from the horizontal position as shown, and this inclination in the construction illustrated brings its free end well above the bed plate, while at the same time its inclinationto the from the chain to permit the handle L to be easily operated without engaging the chain.

' By th may be elevated above the bed plate of the vise so that they are more readily accessible in the operation of engaging the chain is efi'ected by a movement of the rear end thereof. In the previded with a curved face so as to best accom-.

vertical displaces its end sufliciently away e construction thus described the locks E E chain therewith. The formation 1 of the'l'ocks upon the end of the'lever also may be more conveniently and cheaply effected than upon the bed plate of the vise to be located in a convenient position in aas is now customary. Theprovision of a levei of the type described enables the handle and screw for the take-up mechanism simple and effective manner. As the chain is pivoted at one end in fixed relation to the body of the vise, it is adjustable only at its opposite end. A simple and eflicient vise is thus obtained. j

I do not herein claim the use of a lever connected with the chain, as these form the subject matter of an application (No.

668,058) filed by me of even date herewith. While I have shown in detail one form I of my invention, I donot wish to be limited lock for the chain carried by said lever and adapted to engage the chain at any one of a numberof pointsin its length so as to adjust its lengthto pipes of diiferentdiameters, and means for moving said lever to tighten the'chain on the pipe.

2. In a chain pipe vise or the like, the combination of a jaw, a chain, a lever having atone end a lock for the chain, and a ta e -u mechanism engaging the opposite end 0 said lever.

3. In a chain pipe vise or the like, the

combination of a jaw,a chain,"a centrally pivoted lever, a lock formed at the rear end of said lever, and a take-up mechanism at the front end of said lever.

' 4. In a chain pipe vise, the combination of a jawmounted on a fixed support and a chain, said chain being fixed to the front of said vise, a lock at the rear of the vise for engaging the free end of the chain at various points in its length, and means for adjusting said lock to tighten said chain and clamp the pipe against rotation in either direction.

5. In a chain pipe vise, the combination of a jaw mounted on a fixed support, and a chain, said chain being fixed to the front of said vise, a look at the rear of the vise for engaging the free end of the chain at various points in its length, means for ad 'justing said-lockto tighten said chain and clamp the pipe against rotation in either direction, and a handle at the front of the vise for operating said means.

6. In a chain pipe vise or the like, the combination of a pair of jaws, a chain, a lever pivoted between said jaws, a look at the rear end of said lever, and a take-up mechanism operating against the front end of said lever.

.7. In a chain pipe vise or the like, the combination of a pair, of jaws, a chain, a lever pivoted between said. jaws, a look at the rear end of said lever, a nut carried bythe front end of said lever, and a screw engaging said nut.

8. In a chain pipe vise or the like, the

combination of a pair of jaws, a chain, a lever pivoted'between said jaws, a look at the rear end of said lever, a nut carried by the front end of said lever, and a screw engaging said nut, the lower end of said screw bearing against the body of the visa In Witness whereof, I have hereunto signed my name in thepresence of two subscribing witnesses.

GEORGE AMBORN. Witnesses: v

CHARLES B. HARRIS, Vroron F. ROBINS. 

